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mtsoule
Joined: 19 Oct 2011
Posts: 33
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| cannot get RDA2 interrupt to fire |
 Posted: Mon Apr 06, 2026 8:26 am |
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I feel I am overlooking something simple and need another set of eyes, I cannot get RDA2 interrupt to fire, I have seen all the previous posts but none has helped, I suspect it has something to do with my Pin Select since I can’t even get a kbhit() to work. My timer1 interrupt is working as expected but RDA2 is not, any help is appreciated.
main.h
| Code: |
//==========================================================================
// ifdef Section
//--------------------------------------------------------------------------
#ifndef _MAIN_H
#define _MAIN_H
//==========================================================================
// Include Section
//--------------------------------------------------------------------------
//#device ICD=TRUE
//////// Program memory: 65536x16 Data RAM: 8192 Stack: 127
//////// I/O: 44 Analog Pins: 43
//////// Data EEPROM: 1024
//////// C Scratch area: 500 ID Location: 200000
//////// Fuses: LP,XT,HS,NOEXTOSC,ECL,ECM,ECH,RSTOSC_HFINTRC_64MHZ
//////// Fuses: RSTOSC_EXT_PLL,RSTOSC_SOSC,RSTOSC_LFINTRC
//////// Fuses: RSTOSC_HFINTRC_1MHZ,RSTOSC_EXT,CLKOUT,NOCLKOUT,PRLOCK1WAY
//////// Fuses: NOPRLOCK1WAY,CKS,NOCKS,FCMEN,NOFCMEN,MCLR,NOMCLR,PUT_1MS
//////// Fuses: PUT_16MS,PUT_64MS,NOPUT,MVECEN,NOMVECEN,IVT1WAY,NOIVT1WAY
//////// Fuses: LPBOR,NOLPBOR,NOBROWNOUT,BROWNOUT_SW,BROWNOUT_NOSL,BROWNOUT
//////// Fuses: BORV28,BORV27,BORV24,BORV19,ZCDDIS,NOZCDDIS,PPS1WAY
//////// Fuses: NOPPS1WAY,STVREN,NOSTVREN,LVP,NOLVP,XINST,NOXINST,WDT64
//////// Fuses: WDT128,WDT256,WDT512,WDT1024,WDT2048,WDT4096,WDT8192
//////// Fuses: WDT16384,WDT32768,WDT65536,WDT131072,WDT262144,WDT524299
//////// Fuses: WDT1048576,WDT2097152,WDT4194304,WDT8388608,WDT32,WDTSW
//////// Fuses: NOWDT,WDT_SW,WDT_NOSL,WDT,WDTWIN_12%,WDTWIN_25%,WDTWIN_37%
//////// Fuses: WDTWIN_50%,WDTWIN_62%,WDTWIN_75%,WDTWIN_100%,WDTWIN_SW
//////// Fuses: WDTCLK_LFINTRC,WDTCLK_MFINTRC,WDTCLK_SOSC,WDTCLK_SW,BBSIZ32K
//////// Fuses: BBSIZ16K,BBSIZ8K,BBSIZ4K,BBSIZ2K,BBSIZ1K,BBSIZ512,BOOTBLOCK
//////// Fuses: NOBOOTBLOCK,SAF,NOSAF,DEBUG,NODEBUG,WRTB,NOWRTB,WRTC,NOWRTC
//////// Fuses: WRTD,NOWRTD,WRTSAF,NOWRTSAF,WRT,NOWRT,PROTECT,NOPROTECT
////////
#device PIC18F57Q43
#device PASS_STRINGS = IN_RAM
#FUSES RSTOSC_HFINTRC_64MHZ
#FUSES NOBROWNOUT
#use delay(internal = 64MHz)
//==========================================================================
// Define Section
//--------------------------------------------------------------------------
#define Success 1
#define Pass 1
#define Fail 0
#define Amb_Fail 3
#define Invalid_Input 2
#define True 1
#define False 0
// ***************************************************************************
// DEFINTION OF I/O PORTS
// ***************************************************************************
// ALL INPUT PINS ARE DEFINED USING THE PORT ADDRESS
// ALL OUTPUT PINS ARE DEFINED AS USING THE PORT LATCH ADDRESS
// ***** PORT 'A' *****
#define TRISA_RUN 0xFF // 1000 1011
#define PORTA_RUN 0xFF // PORTA OUTPUT INITIALIZATION DATA
// DEFINE PORT 'A' I/O FUNCTIONS
#define PORTA_0 pin_A0 //
#define PORTA_1 pin_A1 //
#define PORTA_2 pin_A2 //
#define PORTA_3 pin_A3 //
#define PORTA_4 pin_A4 //
#define PORTA_5 pin_A5 //
#define TXD3 pin_A6 // SIM7000 TXD
#define RXD3 pin_A7 // SIM7000 RXD
// ***** PORT 'B' *****
#define TRISB_RUN 0xFF // 1000 1011
#define PORTB_RUN 0xFF // PORTA OUTPUT INITIALIZATION DATA
// DEFINE PORT 'B' I/O FUNCTIONS
#define PORTB_0 pin_B0 //
#define PORTB_1 pin_B1 //
#define PORTB_2 pin_B2 //
#define PORTB_3 pin_B3 //
#define PORTB_4 pin_B5 //
#define PORTB_5 pin_B4 //
#define ICSPCK pin_B6 // In Circuit Serial Programming Clock
#define ICSPD pin_B7 // In Circuir Serial Programming Data
// ***** PORT 'C' *****
#define TRISC_RUN 0xFF // 1000 1011
#define PORTC_RUN 0xFF // PORTA OUTPUT INITIALIZATION DATA
// DEFINE PORT 'C' I/O FUNCTIONS
#define PORTC_0 pin_C0 //
#define PORTC_1 pin_C1 //
#define PORTC_2 pin_C2 // Flash CE
#define PORTC_3 pin_C3 // Flash SCLK
#define PORTC_4 pin_C4 // Flash Data In
#define PORTC_5 pin_C5 // Flash Data Out
#define TXD1 pin_C6 // Output - Dbug serial TX
#define RXD1 pin_C7 // Input - Dbug serial RX
// ***** PORT 'D' *****
#define TRISD_RUN 0x02 // 1000 1011
#define PORTD_RUN 0x02 // PORTA OUTPUT INITIALIZATION DATA
// DEFINE PORT 'D' I/O FUNCTIONS
#define TXD2 pin_D0 //O ESP8266 TXD
#define RXD2 pin_D1 //I ESP8266 RXD
#define PORTD_2 pin_D2 //O
#define PORTD_3 pin_D3 //O
#define PORTD_4 pin_D4 //O LCD Data 4
#define PORTD_5 pin_D5 //O LCD Data 5
#define PORTD_6 pin_D6 //O LCD Data 6
#define PORTD_7 pin_D7 //O LCD Data 7
// ***** PORT 'E' *****
#define TRISE_RUN 0x00 // 1000 1011
#define PORTE_RUN 0x00 // PORTA OUTPUT INITIALIZATION DATA
// DEFINE PORT 'E' I/O FUNCTIONS
#define LED_R pin_E0 // LCD Enable
#define LED_G pin_E1 // LCD RS
#define LED_B pin_E2 // LCD RW
#define VPP pin_E3 // Programming Voltage
// ***** PORT 'F' *****
#define TRISF_RUN 0xFF // 1000 1011
#define PORTF_RUN 0xFF // PORTA OUTPUT INITIALIZATION DATA
// DEFINE PORT 'F' I/O FUNCTIONS
#define PORTF_0 pin_F0 //
#define PORTF_1 pin_F1 //
#define PORTF_2 pin_F2 //
#define PORTF_3 pin_F3 //
#define PORTF_4 pin_F4 //
#define PORTF_5 pin_F5 //
#define PORTF_6 pin_F6 //
#define PORTF_7 pin_F7 //
#PIN_SELECT RX1=RXD1 //C7 pin 1
#PIN_SELECT TX1=TXD1 //C6 pin 48
#PIN_SELECT RX2=RXD2 //D1 pin 43
#PIN_SELECT TX2=TXD2 //D0 pin 42
#PIN_SELECT RX3=RXD3 //A7 pin 32
#PIN_SELECT TX3=TXD3 //A6 pin 33
#use delay(INT=32000000)
//#USE SPI (MASTER, DI=SDI1, DO=SDO1,CLK=SCK1,MODE=0, bits=8, STREAM=FLASH)
#use rs232(uart1,baud=115200,parity=N,xmit=TXD1,rcv=RXD1,bits=8,stream=Dbug)
#use rs232(uart2,baud=115200,parity=N,xmit=TXD2,rcv=RXD2,bits=8,stream=SIM)
#use rs232(uart3,baud=115200,parity=N,xmit=TXD3,rcv=RXD3,bits=8,stream=ESP)
//==========================================================================
// Function Prototypes Section
//--------------------------------------------------------------------------
// ***************************************************************************
// INTERNAL GLOBAL VARIABLES
// ***************************************************************************
//#define Dbug 0
// Default Defines
//#define True 1
//#define False 0
//Backlight Defines
#define Off 0
#define Red 1
#define Green 2
#define Blue 4
// EEPROM Locations
#define EE_SSID 0x0000
#define EE_PW 0x0040
#define EE_Amb_Delta 0x02
char New_Dbug_Char;
/*
int1 Dbug_Mode = True;
int t1_overflow;
int T1_OV_Flag;
int mike;
int Connection_Status;
char New_ESP_Char, New_Sim_Char;
int1 ESP_Char_Ready, SIM_Char_Ready, Dbug_Char_Ready;
char Device_SN[20]="48:3f:da:59:80:83";
char Get_WIFI_SSID[32] ="";
char Get_WIFI_PW[32]="";
int WIFI_Failed = False;
*/
unsigned int Current_Connection_Status;
#define ESP8266_Awake 0
#define ESP8266_Connected 1
#define ESP8266_Comm_Good 2
#define ESP8266_Disable 3
#define SIM_Awake 4
#define SIM_Connected 5
#define SIM_Comm_Good 6
#define SIM_Disable 7
// ***************************************************************************
#endif
|
main.c
| Code: |
#include "18F57Q43.h"
#include "main.h"
#include "SIM7000A.h"
#include "SIM7000A.c"
#include "isr.c"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
void Setup_Config(void);
int main (int argc, char** argv)
{
Setup_Config();
while(True)
{
while (kbhit(SIM))
{
output_low(LED_R);
fprintf(sim,"uart2 output");//output_toggle(LED_R);
}
output_toggle(LED_B);
delay_ms(1000);
}
return (0);
}
//***************************************************************************
void Setup_Config(void)
{
setup_oscillator(OSC_HFINTRC_64MHZ);
SET_TRIS_A(TRISA_RUN);
SET_TRIS_B(TRISB_RUN);
SET_TRIS_C(TRISB_RUN);
SET_TRIS_D(TRISB_RUN);
SET_TRIS_E(TRISB_RUN);
SET_TRIS_F(TRISB_RUN);
setup_timer_1(T1_HFINTRC|T1_DIV_BY_1);// Timer1 interrupt
enable_interrupts(INT_TIMER1);
enable_interrupts(INT_RDA);
enable_interrupts(INT_RDA2);
enable_interrupts(INT_RDA3);
enable_interrupts(GLOBAL);
// setup_wdt(WDT_ON|WDT_16S);
// turn LEDS off
output_high(LED_R);
output_high(LED_G);
output_high(LED_B);
return;
}
|
isr.c
| Code: |
#include "main.h"
//#include "SIM7000A.h"
//--------------------------------------------------------------------------
int t1_overflow;
int T1_OV_Flag;
//--------------------------------------------------------------------------
//--------------------------------------------------------------------------
// The Timer One Inturrupt Service Routine
//
//
//--------------------------------------------------------------------------
#int_TIMER1
void T1_isr(void) // 32MHz Clock = 8MHz Instruction Cycle (0.125uS)
{ // 16 Bit Timer = 0.125uS * 65535 = 0.00819mS
t1_overflow++; //
//Second_Ctr_Temp++; // 8.19mS Inturrupt
//output_toggle(LED_G);
//Sleep_Pulse++;
//BT_Conn_Time_out++;
//output_toggle(PORTB_0);
//if (t1_overflow == 0x00) output_toggle(LED_B);
T1_OV_Flag =1; //
}
//--------------------------------------------------------------------------
// The UART interrupt, is connected to the Bluetooth receiving data
//
//
//--------------------------------------------------------------------------
// UART1 Int
#INT_RDA
void RDA_isr(void)
{
output_low(LED_G);
New_Dbug_Char=fgetc(Dbug);
}
// UART2 Int
#INT_RDA2
void RDA2_isr(void)
{
output_low(LED_R);
New_SIM_Char=fgetc(SIM);
}
// UART3 Int
#INT_RDA3
void RDA3_isr(void)
{
output_low(LED_B);
New_SIM_Char=fgetc(ESP);
}
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gaugeguy
Joined: 05 Apr 2011
Posts: 361
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| Posted: Mon Apr 06, 2026 11:38 am |
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main does not accept any variables and does not return any. There is nothing to return to.
in the #use rs232 just specify the hardware UART port and do not specify the pins. That is what #pin_select is for. |
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mtsoule
Joined: 19 Oct 2011
Posts: 33
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| Posted: Wed Apr 08, 2026 11:17 am |
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| gaugeguy, i tried your suggestion, still no joy... but thank you i just dont know why my RDA2 is not working.. |
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gaugeguy
Joined: 05 Apr 2011
Posts: 361
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| Posted: Wed Apr 08, 2026 12:08 pm |
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| Where do you disable the analog functions for those pins? |
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Ttelmah
Joined: 11 Mar 2010
Posts: 20058
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| Posted: Wed Apr 08, 2026 10:59 pm |
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You ned to look at table 21-1, The pins you are using do not support
UART2.  |
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